Science books say out of the Big Bang came forth the planet earth ,how did Big Bang put earth into orbit.?

Question

I´m a junior science student inquisitive to know more.Who can explain to me how the Big Bang that produced the earth and sister planets manage to put them into orbit around the sun, and know the exact speed to orbit so that they won´t fall off into open space?

Answer 1

Ok, this might be a long one, but here goes:

First off, the Big Bang didn't exactly go BANG and then , the earth appeared. It was more like the Big Bang created all the material in the Universe (as we know it) and then regular physics took over for star and planetary formation.

Space isn't empty, its just mostly empty. But there is a lot of "stuff" just floating around out there, and moving around. Stars form when the stuff (usually hydrogen) clumps together because of gravity. Sooner or later there will be so much material that the force of gravity will squeeze the materials together so hard that nuclear fusion occurs and that is the moment the star is born.

The rest of the material that didn't get sucked into the star's formation is what ends up creating planets. Planets form the same way, its just that there isn't enough material to start nuclear fusion. All of this material is already rotating around the new star anyway, so when it clumps together, its already at its "perfect" speed. A better way to think of it is if the material is moving faster than its orbit would allow, than it simply moves out to a larger orbit until the speed of the body balances the gravitational force of the star. (If its going REALLY fast, it can escape the star's gravitational field and fly off into space.) Likewise, if its orbiting too slowly for its orbit, then it will move closer to the star. (And if its going too slow, it could crash into the star.) So the Earth didn't get "put" into its orbit perfectly, it was created in its orbit in the first place. It just so happens that its perfect for life and everything else we find on this world.

Hope that helps some...

Answer 2

It wasnt so much knowing the exact speed necessary to put them into their orbits. Their orbits are determined by what speed they were going when they formed. It's not really right to think that there was this star and then the planets just kinda popped in one by one. Their was a large cloud of gas rotating around the the center. At the center, a star is formed. The gas and material that werent used by the star or were thrown out as the star is formed (this is a really really long process) stays around the star and essentially orbits it. The faster moving materials are further from the star. Over time, the gravity between all the material in orbit starts to collect itself in a series of orbits. The orbitting matter near the sun formed mercury. The next closest matter formed venus and so on. An interesting fact is that their should be a planet where the asteroid belt is but Jupiter's gravity keeps it from properly collecting itself into a nice planet.

Answer 3

It was a very close call.

Theoretically, a very dense ball of energy, referred to as a singularity, had to expand suddenly and rapidly enough to cool in the absolute temperature of empty space, not space as we know it now, to turn into matter like quarks and stuff. Then the matter had to collide and turn into complex matter like atoms. Then the atoms had to collide and turn into bigger and bigger objects with gravity until stars and galaxies were created. Then a star had to burn its self out, collapse and explode and then turn into a nebula. Then, something else had to happen, the death of another star perhaps, to cause the nebula to become gravitationally unbalanced and begin to collapse on its self. The nebula had to begin to spiral like water going down a drain towards the stronger gravitational force created in its center. As the dust and gas of the nebula spiraled, things began to collide and pick up mass and size until their momentum prevented them from being drawn into the center which, by this time, was the sun. The orbits of the growing objects, now the planets, changed as they gained mass until they stabilized in mass and size and thespace between them was pretty much cleared of the remnants of the nebula. All of this had to happen over about 15 billion years which is what hey think the age of the universe is, for now.

If the original star and resulting nebula had been slightly larger, one 100th maybe, smaller, or denser, or had of collapsed maybe 1 minute earlier or later, things would have been a lot different and the earth would not have been able to support life. The sun would have been smaller or larger and its gravity and heat would have been a lot different.

So you see, it all was a matter of luck.

The singularity, by the way, is theoretical and metaphysical because it doesn't exist anywhere else and has only been created in math models. So, perhaps when you get older, you will prove or disprove this theory.

Answer 4

That's not exactly how it works. The universe is created through the Big Bang, and I don't know exactly how. But after that, a star (the Sun) is formed, and because of its gravity, it draws other astral bodies into its gravitation force. The gravitation of the Sun is what keeps the Earth in orbit, not the speed of the orbit.

Answer 5

The universe is 13.7 billion years old and was formed by the Big Bang,

The solar system is 4.6 billion years old,

That means that for the first 9.1 billion years of the universe's history the solar system had not yet come into being.

The first stars that formed after the Big Bang were called Population III. They were large and relatively short-lived and a number of them ended in supernova. Then Population II stars formed from the debris left behind. Then Population I stars, including our sun, formed from the debris left behind by the remnants of Population II stars.

Early in its life the Sun spewed out a cigar-shaped plume of material from which the planets then formed.

So these two events were some 9 and a bit billion years apart in time, and are not causally connected, as you believe them to be.

Answer 6

The big bang is not 'directly' linked to the putting of Earth into orbit. The big bang is thought to be a gigantic explosion that pushed all matter in some direction. After a long long time, that matter bundled into bigger stuff. With attractions and collisions it pushed some bigger and bigger stuff in different directions.

On the solar system, it is thought that our Sun was created from a cloud of dust, and that the other planets were made out of that cloud also.

Answer 7

If you have a science book that says the Big Bang directly formed Earth, I'd like to see it!

For info about the big bang, see http://en.wikipedia.org/wiki/Big_Bang

For info about how the solar system (including Earth) formed, see http://en.wikipedia.org/wiki/Formation_and_evolution_of_the_solar_system

Answer 8

Big bang!! Why couldn't it be a Big Juicy Raspberry!BJR Actually, the shape of the earth is rather flatter at the poles, like a deflating basket ball. The molten core with a high percentage of iron maintains a magnetic field.North & South But the way I understand it is the analogy of a large cement mixer or stones worn smooth by tumbling along the river. It may be the centripital force of spinning and friction which the orbitting body(ies) develop in the style of least resistance that is- rounded or as you say spherical. Star dust as a living thing ? mmmm Again the analogy - you need the right ingredients the right conditions mixed in the right way for the right amount of time with the specific energy requirements maintained for an inordinate amount of eons to raise bubble and form into anything approaching a matrix which invests the ebb and flow of seasonality the pull of tides from a satellite combining the chemical / physical properties of the planet, to even resemble that which we find sensate pulsing reactive reproductive and alive. One heck of a recipe eh! But in a way - why not? God said let there be light! Nothing would exist as we know it without the source.. Pretty fundamental stuff and look at the nuclear reaction of the sun- every thing is made in this cauldren and then consumed but not lost totally but radiates fuelling heat light and cosmic reactions throughout the system, inside a galaxy within our section of the universe which sits on the back of an elephant standing on the back of a turtle!!! BJR I reckon!! Cheers

Answer 9

the proposed big bang happend roughly 65 million years ago, the earth is around 4.6 billion years old, the big bang did not create the earth

Answer 10

A higher power